Mining-machine.



H. B. DIERDORFP.

MINING MACHINE.

APPLIOATION FILED 001.25, 1909.

Patented Deo. 16, 1913.

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HENRY B. DIERDORFF, 0F COLUMBUS, OHIO, .ASSIGNOR TO THE JEFFREY MANUFAC-TUBING COMPANY, A CORPORATION OF OHIO.

MINING-MACHINE.

Specification of Letters Patent.

Application filed 0etobe1'25, 1909.

Patented Dec. Mi, 3.913.

serial No. 524,416.

To elf Ai/i/io/n if may concern.'

lle it .known 'that I, HENRY B. Diimnonir, citizen oit the UnitedStates, residing at Columbus, in the county ot Franklin and State otOhio, have invented certain new and useful Improvements inMining-hilachnes` of which the followingl is a specilicaftioii,rctercnce being' had therein to the accompanying drawing.

'.his invention relates to improvements in mining machines and moreespecially those ot the breast or front thrust type.

The objects of the invention are to pr0- vide an improved trame formining machines ot this type, and also to provide certain other improvedstructural features which will be described in the following'specification.

@t the drawings Figure l. is a plan view ot a mining machine embodyingmy invention, the driving motor being removed 'for the purpose ol moreclearly showing the gearing. Fig'. Q is a side elevation. Fig'. 3 is across-sectional view of the main trame taken along' the line 3 3 oitFig'. 1. In this figure 'there are shown by dotted lines certain partsof the traveling carriage.

lle'terii'ing to the drawings, itI will be noted that the mining machinecomprises two principal parts. One ot' these parts is the. bed or maintrame and is designated by l. The other of the two principal parts isthe movable cutter carrying' :traine which is designated by 2.

The main trame consists of two parallel connected partis 3 5-3, eachcomprising a single piece ot structural rolled steel. I have shofwn inthe drawings and I preter to use channels, but it will be understoodthat Isbeams or any7 o't the other suitable stand ard rolled shapes maybe used. The webs of the channels are cut away at 4 1 for the sake otlightness. The forward end of the web oit each channel is cut away, in asimilar manner, to a point near the center o't the traine. The torwardend oit each channel, then, consists of two separated parts marked 5 andG, respectively. Each o't the upper oit these parts 5-5 is held inalinement with the main part of the (trame and the entii'e smoothstraight ripper suriaces ot the channels serve as t 'acks for thesupporting rollers ol the moving' frame which will be more fullydescribed hereinafter. I prefer to cnt away the inner edge `the upperflange ot each of the channels. l'his makes the flange narrow andtherefore gives greater clearance between the channels 'tor theoperating mechanism ot the movable "traine, and also gives a suitablebearing` surface ltor guides on the traveling frame. The lower part (3ot each channel is bent routward at 7 at an angle to the main part. lhisbending outward gives clearance space tor the moving cutters and alsoprovides the trame with a` wider base. I preter to cut oft the parts (iat; points behind the 't'ront oit the machine. The 'forward ends ot theparts (3 ai'e united to the parts 5 by means oit cast brackets 8 whichare suitably shaped to engage the two parts and are reinforced by ribsEl. At intervals along the bottoms ot the channels are located crossconnecting' plates IO. At the 'toriiiai'd end ot the machine there isprovided a connector ll between the two frame parts 5"-5. This connectorll has a suitable slot adapted to engage with and guide the central bar12 o't the critter trame. l2 and 111- are suitable jacks tor securingthe :traine in place when the machine .is in operation.

yllie cutter train and tl s actuating' mechanism therefor which Ipre'ler to use and which I have shown in the drawings is siniilar tothat shown and described in my prior Patent No. 684,356, granted OctoberS. 1901. The 'trame consists o't the 'toi-ward casting l5, the two sidebars i7 and lt?, and the central guiding bar 1Q. I preler to t'orm thiscentral bar o't a single rectangular 'lorging'. The three bars l2, 't7toward the rear and are attached at their rear ends to the motor andgearing` plate lt).

20 is a bearing depending' trom the plate l). In this bearing is mountedthe vertical sha'lt 2l which carries a chain sprocket at its lower end.rlhis sprocket engages with and actuales the chain 22 which is suitablysupported and guided along' the bars I7, 1S and the vlor vard castingl5. lhe sha'lt 9j] is driven by means ot the beveled gear wheels Q3 and'troni the shatt Q5, which is, in turn. driven b v means o't` the, gearsQV and QT 'l'rom the motor ZS. The plate 19 is supported ou the main'traine by means o't the 'tour rollers '29m-2l).

30--30 are suitable depending' lugs 'from the plate '1.9 which engagewith the inner edges o'tl the top ol. the main l'raine and preventlateral movement.

and Al S convergey The lugs also have l outward extending projectionsadapted to engage the under side of the flanges and thus prevent anyupward movement of the traveling frame.

3l is the feed shaft and carries at its ends pinions 32 which mesh withsuitable racks 33 secured to the channels of the main frame just belowthe top flanges.

311- is a connecting shaft actuated from the shaft 25 by means ofgearing 85. At its rear end it has a worm 36 adapted to engage' with asuitable worm wheel 37 loose on the feed shaft.

38 is a connecting shaft similar to 34 but connected to the shaft 25 bymeans of a worm and wheel which rotate it in a direction opposite tothat of the shaft Sil and at a slower speed.

39 is a worm similar to the worm 3G and likewise engages with a wormwheel loose on the feed shaft.

40 is a clutch attached to the feed shaft and which may be thrown ineither direction by means of the lever el to engage with either of thetwo loose worm wheels.

In operation the machine, after having been properly located andsecured, is driven by means of the motor 28. This motor, through thetrain of gearing before described, operates the chain with its attachedcutters. The clutch l() is thrown so that the feed shaft receives itspower through the shaft 38 and the engagement of the rack wheels 32 withthe racks 33 cause the whole movable frame to travel bodily forward, thecutters being forced into the coal or other material which is being cut.The forward end of the frame is guided and supported by means of the bar19. and the slotted cross bar Il. The rear end of the machine issupported by the rollers 29 which travel on the top of the channels 3.Lateral movement is prevented by means of the lugs 80. When it isdesired to retract the movable frame from the coal, the clutch l0 ist-hrown in the opposite direction and engagement is formed with theshaft 34: which rotates the feed shaft in the opposite direction and thecutter frame is drawn rapidly backward.

What I claim is:

l. In a mining machine, the combination of a movablecutter frame, and astationary an angle to the other, substantially as set forth.

3. In a mining machine, the combination of a movable frame, and astationary frame comprising two rolled metal sections, each having abottom flange, a top flange, and a connecting web, the connecting webbeing cut away for a portion of its length, andV the bottom flangeadjacent said cut away portion being bent horizontally outward at anangle to the other parts of the section, and brackets connecting theseparated top and bottom flanges of each section, substantially as setforth.

1l. In a miningmachine, the combination of a movable cutter frame, and astationary frame comprising two rolled metal sections each having anupper flange, a lower flange, and a connecting web, the upper flange eX-tending beyond the lower flange, a portion of the web being cut awaybetween the two flanges and a part of the lower flange being bentoutward at an angle to the main partof the section, substantially as setforth.

5. In a mining machine, the combination of a movable cutter frame, and astationary frame comprising two rolled metal sections, each having anupper flange, a lower flange and a connecting web, a part of the web ofeach flange being cut away at one end to give clearance for the movablecuttter` frame, and brackets connecting the two flanges of the sectionsat points adjacent the openings inv the webs, substantially as setforth.

In testimony whereof I affix my signature, in presence of two witnesses.

HENRY B. DIERDORFF.

Witnesses klanor C. Drnnnonrr, IVI. B. ALEXANDER.

Copies of this patent may 'be obtained for five cents each, byaddressing the Commissioner of Patents. Washington, D. G.

